While last week’s international news was dominated by the terrorist attacks in Paris that left 17 dead, a larger massacre in a less-watched part of the world went relatively unnoticed. Until now. Human rights groups released satellite images this week that show what they say is indisputable proof of deadly attacks carried out during early January by the Islamist militants from Boko Haram in northeastern Nigeria.

The before-and-after images show the extent of the scorched-earth tactics used by Boko Haram, the watch groups said. An analysis by Amnesty International of images taken on Jan. 2 and Jan 7. found that 3,700 structures were damaged or completely destroyed in the town of Baga and the neighboring Doron Baga (also known as Doro Gowon). According to Human Rights Watch, the exact death toll in Baga and 16 surrounding villages is difficult to establish, with estimates ranging from “dozens to 2,000.”

The Muslim shop employee hailed as a hero for saving customers during a terrorist attack on a Kosher supermarket last week has described how he hid people in a cold storage room as a gunman assaulted the store.

Lassana Bathily, 24, told the BBC that he was working in the basement of the Hyper Casher grocery store when he heard gunshots on Jan. 9. “The customers started running down the steps. They were screaming [that] there were terrorists in the shop,” he said.

Bathily ushered the customers into a cold storage room, then switched off the refrigerator and the lights. “I told the customers to stay calm. [I said:] If the terrorist comes down here he must not hear you.” Bathily said once everyone had quieted down, he decided to go outside to help the police. Initially, police thought he was one of the gunmen, but he convinced them he…